US3714100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinkable vinyl acetate latices
Assignee: Union Oil Company of California
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Filing: 1970-09-03
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Granted: 1973-01-30
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Expires: 1990-09-03
Abstract
Abstract An aqueous latex of a vinyl ester polymer is described which has the property of forming crosslinkable films upon the addition of an extraneous curing additive. The latex is useful as a binder, particularly for non-woven fibers, or for wood panel or textile coating. The polymer comprises a major proportion of a vinyl ester monomer, typically vinyl acetate, which is interpolymerized with polymerizable comonomers comprising a film-formingtemperature regulating amount of a comonomer, typically ethylene or an acrylate ester, and a minor amount of a synergistic combination of crosslinking reactive comonomers, typically diallyl maleate with N-methylolacrylamide. Treatment of the latex to reduce its pH, e.g., by addition of an acidic agent, imparts crosslinking activity to films prepared from the latex. The polymer is dispersed in an aqueous emulsion using an anionic or nonionic surfactant or mixtures thereof, typically a mixture of an alkaryl polyether alcohol and an alkali metal sulfosuccinate half ester of an ethoxylated alcohol.
Inventors
- 👤 G Biale
- 👤 R Pilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:47
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
159 words
An aqueous emulsion of a vinyl ester polymer having the property of forming curable, crosslinked films with high solvent resistance which comprises water, from 1 to about 10 weight percent of an anionic or nonionic surfactant or mixture thereof and from 30 to about 65 weight percent of a polymer comprising: a major proportion of a vinyl ester of a C1 to C10 alkanoic acid interpolymerized with from 1 to 30 weight percent ethylene, an alpha,beta-ethylenically unsaturated C3 to C6 nitrile, a C1 to C10 alkanol ester of methacrylic or acrylic acid or mixtures thereof sufficient to modify the film forming temperature of said polymer; from 0.5 to 5.0 weight percent of an acid curable crosslinkable comonomer comprising acrylamide or methacrylamide bearing a N-C1 to C10 alkylol substituent from 0.01 to 2.0 weight percent of a crosslinkable comonomer comprising a mono or di ester of a terminally unsaturated C2 to C6 alcohol with alpha,beta-ethylenically unsaturated C3 to C6 acids.
Claim 2
Dependent Claim
159 words
An aqueous emulsion of a vinyl ester polymer having the property of forming curable, crosslinked films with high solvent resistance which comprises water, from 1 to about 10 weight percent of an anionic or nonionic surfactant or mixture thereof and from 30 to about 65 weight percent of a polymer comprising: a major proportion of a vinyl ester of a C1 to C10 alkanoic acid interpolymerized with from 1 to 30 weight percent ethylene, an alpha,beta-ethylenically unsaturated C3 to C6 nitrile, a C1 to C10 alkanol ester of methacrylic or acrylic acid or mixtures thereof sufficient to modify the film forming temperature of said polymer; from 0.5 to 5.0 weight percent of an acid curable crosslinkable comonomer comprising acrylamide or methacrylamide bearing a N-C1 to C10 alkylol substituent from 0.01 to 2.0 weight percent of a crosslinkable comonomer comprising a mono or di ester of a terminally unsaturated C2 to C6 alcohol with alpha,beta-ethylenically unsaturated C3 to C6 acids.
Claim 3
Dependent Claim
12 words
The latex of claim 1 wherein said vinyl ester is vinyl acetate.
Claim 4
Dependent Claim
17 words
The latex of claim 2 wherein ethylene constitutes from 5 to 25 weight percent of the polymer.
Claim 5
Dependent Claim
14 words
The latex of claim 2 wherein said acid curable crosslinking comonomer is an N-alkylolacrylamide.
Claim 6
Dependent Claim
10 words
The latex of claim 4 wherein said N-allylolacrylamide is N-methylolacrylamide.
Claim 7
Dependent Claim
28 words
The latex of claim 4 wherein said crosslinkable comonomer is a di ester of an ethylenically unsaturated alkendioic acid and a terminally unsaturated C2 to about C6 alkenol.
Claim 8
Dependent Claim
11 words
The latex of claim 6 wherein said ester is diallyl maleate.
Claim 9
Dependent Claim
12 words
The latex of claim 2 wherein said emulsifier is a nonionic emulsifier.
Claim 10
Dependent Claim
54 words
The latex of claim 8 wherein said emulsifier comprises a mixture of a condensate of from 5 to 30 ethylene oxide units with an alkylphenol of 10 to 18 carbons and a block copolymer of polyoxypropylene and polyoxyethylene of the formula: HO(C2H4O)a(C3H6O)b(C2H4O)c wherein a, b and c are integers between 1 and about 100.
Claim 11
Dependent Claim
14 words
The latex of claim 2 wherein said acid catalyst is acrylic or methacrylic acid.
Claim 12
Dependent Claim
11 words
The latex of claim 1 wherein said comonomer is butyl acrylate.
Claim 13
Dependent Claim
11 words
The latex of claim 1 wherein said comonomer is 2-ethylhexyl acrylate.
Claim 14
Dependent Claim
156 words
An aqueous latex of a vinyl ester polymer having the property of forming curable, crosslinked films with high solvent resistance which comprises water, from 1 to about 10 weight percent of an anionic or nonionic surfactant or mixtures thereof and from 30 to 65 weight percent of a polymer consisting essentially of: ethylene, an alpha,beta-ethylenically unsaturated C3 to C6 nitrile, a C1 to C10 alkanol ester of methacrylic or acrylic acid or mixtures thereof in an amount from 5 to 25 weight percent, sufficient to modify the film-forming temperature of said polymer; from 0.5 to 5.0 weight percent of an N-C1 to C6 alkylolacrylamide or methacrylamide; from 0.01 to about 2.0 weight percent of a cross-linkable comonomer which is a di- ester of a terminally unsaturated C2 to about C6 alkenol with a C2 to about C6 alkenedioic acid; and the balance of said polymer being a vinyl ester of a C1 to C10 alkanoic acid.
Claim 15
Dependent Claim
156 words
An aqueous latex of a vinyl ester polymer having the property of forming curable, crosslinked films with high solvent resistance which comprises water, from 1 to about 10 weight percent of an anionic or nonionic surfactant or mixtures thereof and from 30 to 65 weight percent of a polymer consisting essentially of: ethylene, an alpha,beta-ethylenically unsaturated C3 to C6 nitrile, a C1 to C10 alkanol ester of methacrylic or acrylic acid or mixtures thereof in an amount from 5 to 25 weight percent, sufficient to modify the film-forming temperature of said polymer; from 0.5 to 5.0 weight percent of an N-C1 to C6 alkylolacrylamide or methacrylamide; from 0.01 to about 2.0 weight percent of a cross-linkable comonomer which is a di- ester of a terminally unsaturated C2 to about C6 alkenol with a C2 to about C6 alkenedioic acid; and the balance of said polymer being a vinyl ester of a C1 to C10 alkanoic acid.
Claim 16
Dependent Claim
12 words
A latex of claim 13 wherein said vinyl ester is vinyl acetate.
Claim 17
Dependent Claim
16 words
The latex of claim 14 wherein said polymer contaIns from 5 to 25 weight percent ethylene.
Claim 18
Dependent Claim
12 words
The latex of claim 14 wherein said alkenol ester is butyl acrylate.
Claim 19
Dependent Claim
12 words
The latex of claim 14 wherein said alkenol ester is 2-ethylhexyl acrylate.
Claim 20
Dependent Claim
15 words
The latex of claim 15 wherein said N-C1 to C10 alkylolacrylamide or methacrylamide is N-methylolacrylamide.
Claim 21
Dependent Claim
15 words
The latex of claim 16 wherein said N-C1 to C10 alkylolacrylamide or methacrylamide is N-methylolacrylamide.
Claim 22
Dependent Claim
15 words
The latex of claim 17 wherein said N-C1 to C10 alkylolacrylamide or methacrylamide is N-methylolacrylamide.
Claim 23
Dependent Claim
12 words
The latex of claim 18 wherein said cross-linkable comonomer is diallyl maleate.
Claim 24
Dependent Claim
12 words
The latex of claim 18 wherein said cross-linkable comonomer is diallyl maleate.
Claim 25
Dependent Claim
12 words
The latex of claim 20 wherein said cross-linkable comonomer is diallyl maleate.
Claim 26
Dependent Claim
68 words
The latex of claim 13 having an improved stability with a pH from 6.5 to 8.5 and being prepared by the addition to the latex after its polymerization of from 0.5 to 1.5 weight percent based on the polymer weight of an anionic surfactant and a sufficient quantity of ammonia, ammonium hydroxide or a C1 to C5 alkylamine to raise the pH of said latex to said value.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |